Name: true gene silencing: screening of a heptamer-type small guide rna library for potential cancer therapeutic agents
Uploaded: 2016-06-02T14:00:00
Description: Watch this Scientific Journal Video about TRUE Gene Silencing: Screening of a Heptamer-type Small Guide RNA Library for Potential Cancer Therapeutic Agents at JoVE.com

Dette arbeidet ble støttet av Tilpasningsdyktig og sømløs Technology Transfer Program gjennom Target-drevet R &amp; D, Japan Science and Technology Agency, Science Research Promotion Fund fra Kampanjen og Mutual Aid Corporation for Private Schools of Japan, og JSP KAKENHI Grant Tall 24300342 og 15H04313 .

1. Bygging av en Heptamer-type sgRNA Library <ol><li> Velg en undergruppe av 16,384 (4 7) 7-nt sekvenser med mindre fullskala bibliotek skal bygges. MERK: Sekvensene kan være tilfeldig og / eller utformet for å målrette bestemte cellulære RNA. For den sistnevnte, finner hårnålstrukturer likner den T-arm av tRNA i en mål-RNA ved hjelp av et passende dataprogram og / eller visuelt, og ved å velge sekvenser komplementære til 7-nt-sekvenser umiddelbart nedstrøms for hårnålstrukturer 4,10...

<ol>
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S., Takaku, H., Takagi, M., Nashimoto, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+T+loop+structure+is+dispensable+for+substrate+recognition+by+tRNase+ZL.">The T loop structure is dispensable for substrate recognition by tRNase ZL.</a> J. Biol. 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A., Takaku, H., Tamura, M., Nashimoto, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Inhibition+of+vascular+endothelial+growth+factor+expression+by+TRUE+gene+silencing.">Inhibition of vascular endothelial growth factor expression by TRUE gene silencing.</a> Biochem. Biophys. Res. Commun. 379, 924-927 (2009).</li><li>Sano, T., Takahashi, M., Nozaki, T., Takahashi, Y., Tamura, M., Nashimoto, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Expanding+the+utility+of+heptamer-type+sgRNA+for+TRUE+gene+silencing.">Expanding the utility of heptamer-type sgRNA for TRUE gene silencing.</a> Biochem. Biophys. Res. Commun. 416, 427-432 (2011).</li><li>Iizuka, S., Oridate, N., Nashimoto, M., Fukuda, S., Tamura, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Growth+inhibition+of+head+and+neck+squamous+cell+carcinoma+cells+by+sgRNA+targeting+the+cyclin+D1+mRNA+based+on+TRUE+gene+silencing.">Growth inhibition of head and neck squamous cell carcinoma cells by sgRNA targeting the cyclin D1 mRNA based on TRUE gene silencing.</a> PLoS One. 9 (114121), (2014).</li><li>Takahashi, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Elimination+of+specific+miRNAs+by+naked+14-nt+sgRNAs.">Elimination of specific miRNAs by naked 14-nt sgRNAs.</a> PLoS One. 7 (38496), (2012).</li><li>Takahashi, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+naked+RNA+heptamer+targeting+the+human+Bcl-2+mRNA+induces+apoptosis+of+HL60+leukemia+cells.">A naked RNA heptamer targeting the human Bcl-2 mRNA induces apoptosis of HL60 leukemia cells.</a> Cancer Lett. 328, 362-368 (2013).</li><li>Watanabe, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induction+of+apoptosis+of+leukemic+cells+by+TRUE+gene+silencing+using+small+guide+RNAs+targeting+the+WT1+mRNA.">Induction of apoptosis of leukemic cells by TRUE gene silencing using small guide RNAs targeting the WT1 mRNA.</a> Leukemia Res. 37, 580-585 (2013).</li><li>Elbarbary, R. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Modulation+of+gene+expression+by+human+cytosolic+tRNase+ZL+through+5&#8242;-half-tRNA.">Modulation of gene expression by human cytosolic tRNase ZL through 5&#8242;-half-tRNA.</a> PLoS One. 4, 5908 (2009).</li><li>Elbarbary, R. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+cytosolic+tRNase+ZL+can+downregulate+gene+expression+through+miRNA.">Human cytosolic tRNase ZL can downregulate gene expression through miRNA.</a> FEBS Lett. 583, 3241-3246 (2009).</li><li>Ninomiya, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Potential+small+guide+RNAs+for+tRNase+ZL+from+human+plasma,+peripheral+blood+mononuclear+cells,+and+cultured+cell+lines.">Potential small guide RNAs for tRNase ZL from human plasma, peripheral blood mononuclear cells, and cultured cell lines.</a> PLoS One. 10, 0118631 (2015).</li><li>Takahashi, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Screening+of+a+heptamer-type+sgRNA+library+for+potential+therapeutic+agents+against+hematological+malignancies.">Screening of a heptamer-type sgRNA library for potential therapeutic agents against hematological malignancies.</a> Leukemia Res. 38, 808-815 (2014).</li><li>Shivarov, V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=TRUE+gene+silencing+for+hematologic+malignancies.">TRUE gene silencing for hematologic malignancies.</a> Leukemia Res. 38, 729 (2014).</li></ol>

In most cases, fully 2&#8242;-O-methylated, 5&#8242;- and 3&#8242;-phosphorylated heptamer-type sgRNAs dissolved in water-for-injection-grade water (in the concentration of 100 &#181;M) appear to be stable at below -20 &#176;C for at least one year, judging from their activity to induce apoptosis in cancer cells. However, their stability would change depending on their sequence, quality, and purity. In some cases, 5&#8242;- or 3&#8242;-phosphate of a part of sgRNA molecules appears to be removed spontaneously du...

TRUE genet Slå (kalt etter tR nase Z L - u tilizing e fficacious genet Slå) er en av de RNA-rettet genet Slå teknologier 1. Denne teknologien har blitt utviklet basert på egenskapene til tRNase Z L (eller 3 &#39;tRNase), tRNA 3&#39; behandling endoribonuclease: det kan holde seg noen mål RNA når som forventet stedet i regi av en kunstig liten guide RNA (sgRNA) ved å anerkjenne en pre-tRNA-lignende eller mikro-pre-tRNA-lignende struktur dannet mellom target RNA og sgRNA 2 - 9. sgRNA, som vanligvis er 7-31 nt i lengde, er inndelt i fire grupper, 5&#39;-halv-tRNA, heptamer RNA, 14-nt lineær RNA og RNA-krok. Vi har vist effekt av TRUE genet Slå ved å innføre ulike kunstig designede sgRNAs i levende celler 10-15. Vi har også vist at sgRNAs kan tas opp av celler without noen transfeksjon reagenser og kan nedregulere sine mål RNA nivåer og / eller indusere apoptose i humane kreftceller 16 - 18. TRUE genet Slå ser ut til å fungere på den intracellulære og inter gennettverk system via tRNase Z L og naturlige sgRNAs 19 - 21. Vi har konstruert en sgRNA bibliotek som inneholder 156 heptamer-type sgRNAs å søke etter potensielle terapeutiske heptamer-type sgRNAs for blod kreft 22. Vi har undersøkt den for virkning på levedyktigheten til human myelom og leukemi celler, og fant at 20 av dem kan effektivt indusere apoptose i minst en av de kreftcellelinjer. Og fire av dem har vist seg å redusere svulstvekstrater i mus xenograft eksperimenter. Her presenterer vi en protokoll for screening av en heptamer-type sgRNA bibliotek for potensielle terapeutiske legemidler mot blodkreft. Protokollen inkluderer hvordanå konstruere sgRNA biblioteket, hvordan å vurdere effekten av hver sgRNA på celle levedyktighet, og hvordan man skal videre vurdere effektive sgRNAs av flowcytometri. Analyse for sgRNA cellulære mål RNA og evaluering av effektive sgRNAs i mus xenograft-modeller kan bli utført ifølge konvensjonelle fremgangsmåter 17,22, selv om disse ikke er inkludert i denne protokollen.

<table border="0" cellpadding="0" cellspacing="0" width="948">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:457px;">Custom heptamer RNA</td>
			<td style="width:167px;">Nippon Bioservice</td>
			<td style="width:144px;"></td>
			<td style="width:180px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">OligoSep Prep HC Cartridge</td>
			<td style="width:167px;">Transgenomic</td>
			<td style="width:144px;">99-3860</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Water-for-injection-grade Water</td>
			<td style="width:167px;">Otsuka Pharmaceutical&#160;</td>
			<td style="width:144px;">7131400A2129</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">RPMI-1640 medium</td>
			<td style="width:167px;">Wako</td>
			<td style="width:144px;">189-02025</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Fetal Bovine Serum</td>
			<td style="width:167px;">SIGMA-ALDRICH</td>
			<td style="width:144px;">172012-500ML</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:457px;">Penicillin-Streptomycin Mixed Solution</td>
			<td style="width:167px;">Nacalai Tesque</td>
			<td style="width:144px;">26253-84</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">96 Well Plate</td>
			<td style="width:167px;">Greiner Bio-one</td>
			<td style="width:144px;">655 180</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Cell Counting Kit-8</td>
			<td style="width:167px;">DOJINDO</td>
			<td style="width:144px;">343-07623</td>
			<td>WST-8 solution</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Microplate Reader, Sunrise Thermo RC-R</td>
			<td style="width:167px;">TEKAN</td>
			<td style="width:144px;">510-82851</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">FACS Round-Bottom Tube</td>
			<td style="width:167px;">BD Falcon</td>
			<td style="width:144px;">60819-820</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Phosphate Buffered Saline</td>
			<td style="width:167px;">SIGMA-ALDRICH</td>
			<td style="width:144px;">P7059-1L</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">PE Annexin V Binding Buffer</td>
			<td style="width:167px;">BD Biosciences</td>
			<td style="width:144px;">51-66121E</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">PE Annexin V</td>
			<td style="width:167px;">BD Biosciences</td>
			<td style="width:144px;">51-65875X</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">7AAD</td>
			<td style="width:167px;">SIGMA-ALDRICH</td>
			<td style="width:144px;">A9400-1MG</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Flow Cytometer, FACSCalibur</td>
			<td style="width:167px;">BD Biosciences</td>
			<td style="width:144px;">342973</td>
			<td></td>
		</tr>
	</tbody>
</table>

true gene silencing: screening of a heptamer-type small guide rna library for potential cancer therapeutic agents

TRUE genet Slå (kalt etter tR nase Z L - u tilizing e fficacious genet Slå) er en av RNA-rettet genet stanse teknologier, som benytter en kunstig liten guide RNA (sgRNA) til å veilede tRNA 3 &#39;behandling endoribonuclease, tRNase Z L , for å gjenkjenne et target RNA. sgRNAs kan tas opp av cellene uten transfeksjon reagenser, og kan nedregulere sitt target-RNA-nivå og / eller induserer apoptose i humane kreftceller. Vi har vist en sgRNA bibliotek inneholdende 156 heptamer-type sgRNAs for virkning på levedyktigheten til human myelom og leukemi celler, og fant at 20 av dem kan effektivt indusere apoptose i minst en av de kreftcellelinjer. Her presenterer vi en protokoll for screening av en heptamer-type sgRNA bibliotek for potensielle terapeutiske legemidler mot blodkreft. Protokollen inkluderer hvordan å konstruere sgRNA biblioteket, hvordan å vurdere effekten av hver sgRNA på celle levedyktighet, og hvordan du kan further evaluere de effektive sgRNAs ved flowcytometri. Rundt 2000 treff forventes å oppnås ved screening fullskala sgRNA bibliotek består av 16,384 heptamers.

De seks heptamer-type sgRNAs 5&#39;-AUCUUCA-3 &#39;(H1885), 5&#39;-ACACACA-3&#39; (H3277), 5&#39;-GGGGGCG-3 &#39;(H10927), 5&#39;-GGGGCCC-3&#39; (H10944), 5&#39;-GCCCCCG-3 &#39;(H12287), og 5&#39;-CACCAGC-3&#39; (H13260) ble kjemisk syntetisert som 2&#39;-O-metyl RNA inneholdende 5&#39;- og 3&#39;-fosfater. Disse sgRNAs ble undersøkt for virkninger på levedyktigheten til en human leukemicellelinje HL60, og en human ...

Watch this Scientific Journal Video about TRUE Gene Silencing: Screening of a Heptamer-type Small Guide RNA Library for Potential Cancer Therapeutic Agents at JoVE.com

TRUE Gene Silencing: Screening of a Heptamer-type Small Guide RNA Library for Potential Cancer Therapeutic Agents

Her presenterer vi en protokoll for screening av en heptamer-type sgRNA bibliotek for potensielle terapeutiske legemidler mot blodkreft.

TRUE genet Slå: Screening av en Heptamer-type liten guide RNA bibliotek for potensielle kreft Terapeutiske midler

TRUE gene silencing (termed after tRNase ZL-utilizing efficacious gene silencing) is one of the RNA-directed gene silencing technologies, which utilizes ...

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